Please use this identifier to cite or link to this item: https://doi.org/10.1021/ie050836g
Title: Fundamental characteristics of sorption, swelling, and permeation of P84 Co-polyimide membranes for pervaporation dehydration of alcohols
Authors: Qiao, X.
Chung, T.-S. 
Issue Date: 9-Nov-2005
Source: Qiao, X.,Chung, T.-S. (2005-11-09). Fundamental characteristics of sorption, swelling, and permeation of P84 Co-polyimide membranes for pervaporation dehydration of alcohols. Industrial and Engineering Chemistry Research 44 (23) : 8938-8943. ScholarBank@NUS Repository. https://doi.org/10.1021/ie050836g
Abstract: An in-depth study of sorption, swelling, and permeation of aqueous ethanol, 2-propanol (IPA), and tert-butyl alcohol through BTDA-TDI/MDI (P84) co-polyimide membranes has been conducted. The superior separation performance toward aqueous IPA and tert-butyl alcohol mixtures mainly arises from four factors: (1) rigid P84 chains with a small d-space, (2) the lesser affinity between P84 and IPA as well as between P84 and tert-butyl alcohol, (3) a high sorption selectivity, and (4) steric hindrance induced by bulky IPA and tert-butyl alcohol molecules. However, because of severe chain swelling and relaxation in ethanol/water solutions as confirmed by XRD and DSC, P84 performs less impressively for the pervaporation dehydration of ethanol/water mixtures. © 2005 American Chemical Society.
Source Title: Industrial and Engineering Chemistry Research
URI: http://scholarbank.nus.edu.sg/handle/10635/68255
ISSN: 08885885
DOI: 10.1021/ie050836g
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